Journal
IEEE SIGNAL PROCESSING LETTERS
Volume 23, Issue 1, Pages 121-125Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2015.2504954
Keywords
Covariance matrix reconstruction; matrix taper; robust beamforming; spatial power spectrum sampling
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Funding
- project of State Key Laboratory of Millimeter Waves [K201314]
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Recently, a robust adaptive beamforming (RAB) technique based on interference-plus-noise covariance (INC) matrix reconstruction has been proposed, which utilizes the Capon spectrum estimator integrated over a region separated from the direction of the desired signal. Inspired by the sampling and reconstruction idea, in this paper, a novel method named spatial power spectrum sampling (SPSS) is proposed to reconstruct the INC matrix more efficiently, with the corresponding beamforming algorithm developed, where the covariance matrix taper (CMT) technique is employed to further improve its performance. Simulation results are provided to demonstrate the effectiveness of the proposed method.
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